2x(2x+1)(2x-1)... 2x((4x^2)-2x+2x-1)... 2x((4x^2)-1)... (8x^3)-2x ... so the answer would be the last one
She walks 880 yards. Since half a mile is 880 yards.
we have that
one-third of one-eighth of one-fourth is equal to
Any number between 10 and -4.
90ft by 7ft gives an area of:
90 x 7 = 630 sq ft
1/2 fl oz is needed for each square foot
630 x 1/2 = 315 fl oz required.